Unit MUST be installed using the appropriate wall
mounting plate (see Fig. 4b) and with the longer cowl
dimension running horizontally.
On inclined roofs, the longer dimension of the cowl must be
running ACROSS roof slope. Unit can be installed at an angle
of up to 80
O
from the horizontal with the cowl so aligned.
Introduction
The units are manufactured using a range of six basic cowl
sizes A - F. Impellers are available in axial, mixed flow or
centrifugal versions.
Coding:
TRA = Axial Flow, TRM = Mixed Flow, TRC = Centrifugal
A given cowl size may serve more than one size impeller.
e.g. TRA500 & TRA560 use a size C cowl. (Table on page 2).
Each unit consists of a base incorporating a spun venturi plate,
a bridge* from which the motor and impeller are suspended and
a GRP cowl (fig. 1).
Motors are manufactured to BS5000, have sealed for life
bearings and have integral thermal protection which must be
incorporated into the control wiring. Failure to use this device
will invalidate the equipment warranty.
1.0 Handling
Units must at all times be handled carefully to avoid damage or
distortion. The unit is delivered fully assembled and mounted
on a pallet for ease of handling. When lifting or hoisting units,
care must be taken to ensure that no pressure is applied to the
cowl. Lifting eyes, suitable for all units, are available.
Purlin Box / Curb
Purlin box / curbs are manufactured in galvanised mild steel.
The upper face of the purlin box is fitted with a sealing strip.
When installed, the curb must be securely attached to the
trimmer angles.
Soaker Sheet
Soaker Sheets can be supplied by Nuaire. Manufactured in high
quality GRP, each sheet is 19500 mm long and can be supplied
to match most roof profiles. The soaker sheets are designed to
be used over a prefabricated curb.
2.0 Installation
The installation must be carried out by competent personnel in
accordance with the appropriate authority and conforming to all
statutory and governing regulations.
The unit is delivered completely assembled and a protective skin
prevents damage to the unit. It is strongly recommended that
this protective skin is allowed to remain in position for as long
as possible. When neccessary, the skin should be removed
using a sharp knife, taking care not to score the unit surface.
The unit can now be inspected for damage. Any accumulation of
dirt should be removed (see cleaning, page 6).
The unit is designed for roof mounting but can be wall mounted
using the optional wallkit available from Nuaire (see page 3).
2.1 Roof installation
Check that the curb mounting surface is flat and that the seal-
ing strip is in position. (A suitable mastic may be used as an
alternative).
If backdraught shutters or inlet side guards are to be fitted they
should be installed centrally in the curb.
Curbs other than Nuaire purlin box/curbs should be fitted with
timber capping. On timber capped curbs the units may be
attached using coachbolts or similar. When attaching to Nuaire
purlin box/curbs the use of TEK self drilling screws (type SF
46516) or self tapping screws is recommended.
Holes are provided in the skirt of the units base/venturi plate.
(See fig. 5).
2.2 Wall installation
If still assembled, separate the unit and wall plate by removing
the screws and washers from around the unit skirt. Retain the
fixings. Depending on the type of wall, prepare a hole to the
dimensions shown on page 3. For a solid wall, fit the hole with
a timber frame as shown. Drill and fit appropriate wall plugs
and secure the timber frame. On completion, the frame must
be flush with the outside surface of the wall.
For installation to a profile sheet wall, fit a suitable timber
frame supported by means of angle-iron sections. The timber
frame should, on completion, be flush with the outside sheet
profile (Fig. 4).
Apply a flexible silicone sealer e.g. Flowseal 32 to the timber
frame and secure the wall plate using suitable coach bolts,
nuts and washers. On a solid wall installation, apply a fillet
of sealant between the wallplate and wall.
On profile walls it will be neccessary to ‘flash’ the wall plate.
Flashing strips should extend sufficiently to allow fixing to a
high portion of the profile section. Ensure that the flashing
strips over lap at the four corners. Fill between the top and
bottom flashing strips with Neoprene profile filler and seal all
external joints and seams with a suitable flexible silicone sealer
such as Flowsil 32. (See Wallplate dimensions fig. 4b).
1
12. 05. 17. Leaflet Number 670506
Terminator
TRA/TRM/TRC Roof Extract Fan
Installation and Maintenance
Figure 1. View of unit
The EMC Directive
2014/30/EU
The Low Voltage
directive
2014/35/EU
Nuaire: A Trading Division of Polypipe Limited
Western Industrial Estate
Caerphilly United Kingdom CF83 1NA
T: 029 2088 5911 F: 029 2088 7033 E: [email protected] W: www.nuaire.co.uk
